| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] [adj] years [unc] [noun] | 25 |
|
| 2 | [num] [adj] years [unc] [noun sg] | 19 |
|
| 3 | [adj] [adj] years [unc] service | 7 |
|
| 4 | [num] [adj] [noun pl] [unc] service | 5 |
|
| 5 | [num] [adj] years [unc] service | 5 |
|
| 6 | [num] [adj] [noun] [unc] service | 5 |
|
| 7 | [num] [adj] year [unc] service | 5 |
|
